Six-wheel-car-truck brake.



. G. F. PRBDE. SIX WHEEL CAR TRUCK BRAKE. APPLICATION FILED MAR.21,1913.

- Patented Dec. 2, 1913. ;-s\sHEETs-sHEE'T 1 Chad/577648 0.P PREDEf SIXWHEEL OAR TRUCK BRAKE. APPLICATION FILED MAR.21,15 )13.

1 ,O80,206. Patented Dec. 2, 1913.

2 'SHEETSSHEET 2.

Wye/1m)" Char/e5 F Freda v 'unrrnn STATES PATENT OFFICE.

- CHARLES F. Fenian, on "sat. LOU-IS, MISSOURI,- ASSIGNOR. To.DOUIBLE'BQEDY Bo srER.

COMPANY, OF ST. LOUIS, MISSOURI, A GQBPORATIQN GEE JERSEY.

Specificationof Letters, Patent.

Application filed March 21, 1913. Serial No. 755,922.

To all whom it may concern: v Be it known that'I, CHARLES FREDE, acitizen 'of the United States, residing at St. Louis, Missouri, haveinvented a certain new and useful Improvement in slx-VVheel-(lar- TruckBrakes, of which the following is a full, clear, and exact description,such as w1 ll enable others skilled in the art to which it appertain'sto make and use the same, reference being had to theaccompanylngdrawings,hforming part of this specification, in whic Figure1 is a plan view of, the brake rig- .gin g of my improved construction,the same being in position for use with the truck frame, axles andWheels shown in dotted lines. Fig. 2 is a sectional view taken approximately on the line 22 of Fig. 1. Fig. 3 is a transverse sectionalv1ew taken approximately on the line 33 of Fig. 1.

My invention relates to new and useful improvements, in brake rlggingfor six-wheel car trucks, the principal object of my inven- 'tion beingto provide a simple and efiicient brake mechanism having comparativelyfew parts, and which mechanism is of the clasp type, that is,a pair ofbrake beams for each M pair of wheels, thus providing a pair "fof brakeshoes for each wheel.

A further object of myinvention is to pro-- vide a simple form of claspbrake mechanism for six wheel trucks, wherein. all the brake levers,brake rods and'other parts, with the exception of the brake beams andshoes are located above the axles, and-by such arrangement said partsare,'to a conslderable extent, protected against disarrangement and.

breakage due to contact with objects, such as stones, timbers or thelike lying on the.

right-of-way.

A further object of my invention is, to

provide simple means for actuating all the brake levers that areattached to the brake beams, thereby imparting simultaneous and.

.above the axle 4 is. a rod t vRigidly fixed to the transom and end railthe wheels carried thereby. Arranged on opposite sides of the axles andsuspended from thetr-iick frame by suitable hangers or links 6 are brakebeams 7. provided on their ends with the usual heads and shoes, whichlatter are adapted to engage on opposite sides of thewheels 5,. Fixed tothefend rail and transom of the truck frame adjacent to the axle 4 is alongitudinally disposed rail or bracket 8 provided near its ends withslots 9 and 10. Positioned in the slot 9 and pivotally connected to thebracket 8 is the upper end of a lever 11, the lower end'of which ispivotally connected to the strut of the corresponding brake beam. Thewalls of the bracket 8 to the sides of the slot 9 are pro.- vided witha'series of coinciding apertures 12, thus permitting the upper end ofthe lever 11 to be pivotally connected to said .bracket at differentpoints. The upper portion of a brake lever 13 projects throughand is.loosely seated in the slot 10, and the lower end of this lever ispivotally connected to the corresponding brake beam. Pivotallyconnectedto the levers 11 and 13 and arranged Patented Dec. 2, 1913-.

of the truck frame above and-adjacent, to the m axle 4 is alongitudinally extending rail or bracket 15 provided near its ends withslots 16 and 17. Positioned in the .slot 16 and pivotally connected tothe rail or bracket 15 is the upper end of a lever 18, the lower end ofwhich is pivotally connected to the corresponding one of the brake beams7. The

and the lever 18 are the ends of arod 21 which ispreferably locatedabove the axle 4.

Fixed to one of the transoms of the truck frame adjacent to the centeraxle 4. is a bracket 22 provided with a vertically disposed,longitudinally extending slot 23, and positioned in this slot andpivotally coilnectedto said bracket is the upper endof a lever 24,.thelower end of which is pivotally connected to the correspondin one of thebrake beams 7. The walls of t e bracket 22 17 is a lever 20.

to "the sides of the slot :23 are provided with a series. of aperturesarranged in pairs, whereby the upper end of the lever 24 may beadjustably connected to said bracket.

ivotally connected to the lever 24-is one end of a rod 25, the oppositeend of which ispivotally connected to a lever 26, which latter islocated on the opposite side of the axle d from the lever 24. The lowerend of this lever 26 is pivotally connected to the corresponding one ofthe brake beams 7. Pivotally connected to the upper end of the lever 26is one end of a rod 27, the opposite end of which is pivotally connectedto one end of a horizontally disposed lever 28.

' This lever 28 is positioned above the inner end of the bracket or rail15, and pivotally connected to said lever 28 is one end of a rod '29,the opposite end of which is ivot ally connected to the upper end of t elever 13. Arranged above the inner end of the bracket or rail 15adjacent to the lever 28 is a horizontally disposed lever 30, thecentral portion of which is connected to the lever 28 by a link 31. Oneend of the lever 80 is connected to the upper end of the lever 20 by alink 32, and the opposite end of said lever 30 is pivotally connected toone end of a rod 33 which extends to and is directly connected to thepiston rod of the air brake cylinder (not shown).

' The operation of my improved brake mechanism is as follows: When thebrake rod 33 is drawn in thedirection indicated by the arrow in Fig. 1the lever 30 will be moved in the same direction, likewise moving thelever 28 and the rods 27 and 29 connected thereto. At the same time thelever 30 is moved in the direction of the pull upon the rod 33 itfulcrums upon its point of pivotal connection with the.li'nk 31, thusmoving the link 32 and the upper end of the lever 20 in a directionopposite to that of the rod 33. This movement of the lever 20 istransmitted to the lever 18 through the rod 21, and as a result, saidlever l8 swings on its fulcrum, which is the point of pivotal connectionbetween said lever and the bracket 15, and as a result, the lowerend ofsaid lever moves the brake beam to which it is connected, and the shoeson the ends of this brake beam are caused to engage the peripheries ofthe wheels 5 upon the axle 4 As the lever 20 is actuated in thismovement of the beam to which the lower end of the. lever 26 isconnected'will be brought into contact with the wheels. on the axle 4*.The movement of the rod 27 is transmitted to the rod 25 through thelever26, and as a result, the lever 24 is moved upon its fulcrum, which isthe point of. pivotal connection with the bracket 22, and as aresult,.the shoes on the ends of the brake beam connected to said lever24 will be drawn into contact with the peripheries of the wheels on theaxle 4 The movement of the rod 29 is transmitted directly to the lever13, and from thence through rod 14 to lever 11, and .as these levers aremoved upon their fulcrums, the brake: beams to which the lower ends ofsaid levers 'are connected will be moved toward each other, and as aresult,

the shoes carried by said brake beams will be brought into contact withthe peripheries of the wheels uponthe axle 1. It will be understood thatthe movements just described occur simultaneously as the brake rod 33 isactuated, and as a result, the respective pairs of brake .beams will bemoved toward each other so that the brake shoes carried by said brakebeams will clasp or engage on o posite sides of the wheels to exert bra'ng action. y

In many types of six wheel car trucks brake beams are applied only onone side of each pair of wheels, and it has been found in practice thatwhere such construction is employed, the constant application of thebrakes against the wheels from one side results in uneven wear anddisarrangement of the journals .or axle bearings, consequently resultingin frequent repairs and renewals. My improved arrangement of claspbrakes, the shoes of which engage on opposite sides of the wheels,overcomes the objections above noted inasmuch as the pressure of thebrak- 7 ing action.is applied equally to both sides of the wheels,therebyrelieving the journals of undue and uneven strains. 7

My improved brake rigging consists of comparatively fewparts,andtherefore said rigging is not liable to easily get out oforder. Furthermore, by arranging practically all of the levers and rodsof the rigging above the axles, these 'parts are not liable to becomedisarranged or broken as a result of contact with objects lying on theright-of-way.

It will be readily understood that minor changes in the size, form andconstruction of the various parts of my improved brake rigging can bemade and substituted for those herein shown and described withoutdeparting from the spirit of my invention, the scope of which is setforth in the 'appended claims.

I claim:

1. A brake rigging for six wheeled trucks,

comprising brake beams arranged in pairs on opposite sides of the Wheelsof the truck, levers each pivotally connected to a certain one of thebreak beams of each pair at one end, and pivotally connected to fixedparts of the truck at their opposite ends, a floating lever pivotallyconnected to the other brake beam of each pair, a rod connecting eachpair of levers, and means connected to all of the floating levers forsimultaneously imparting movement thereto.

2. In a six wheel car truck, t e combination-with brake beams arrangedin pairs on opposite sides of the truck wheels, of levers .pivotallyconnected-to said brake beams,

one lever of each pair being fulcrumed' to a fixed part of the truckframe, a rod connectmg each pair of levers, and means forsimult-aneously imparting uniform movement to allot" the 1evers.-

3. In a six wheelcar truck, the combination with brackets fixed to thetruck frame, of levers fulcrumed to said brackets, floating leversarranged in pairswith the first mentioned levers, connections betweeneach corresponding pair of levers, brake beams pivotally connected tosaid levers, which brake beams are arranged on opposite sides of thetruck wheels, and connections to said floating levers for simultaneouslyimparting movement thereto.

4. The combination with a six' wheeled truck, of brackets fixed to thetruck frame, levers fulcrumed' to said brackets, floating leversarranged in pairs with said first mentioned levers, connections betweenthe pairs of levers, brake beams pirvotally connected to said levers andarranged in pairs on opposite sides of the truck wheels, and

' connections including rods and equalizing levers for si hultaneouslyimparting uniform movement to the floating levers.

5. A. brake rigging for six wheeled trucks comprising brake beamsarranged in 'pairs on opposite sides of the wheels, levers pivotallyconnected to said brake beams, brackets on the truck frame to which theupper endof one of each pair of levers is fulcrumed, certain of whichbrackets are slotted to form bearings for certain of the levers,

a rod connecting each pair of levers, a power-actuated rod, andconnections be: tween said power-actuated rod and certain of the leverswhereby corresponding movement is simultaneously imparted to all of thebrake levers and the brake beams carried thereby.

'6; A brake rigging for six wheeled trucks comprising levers arranged inpairs and pivotally connected to the brake beams, one lever of each pairbeing pivotally connected to a corresponding bracket, a connecting rodbetween eachpair of levers, a pair of floating equalizing levers,connectlons between said equalizing levers and certain of the brakelevers, and means for applying power to one of the floating equalizinglevers.

7. The combination with a six-wheeled truck frame having rend rails andtransoms, of brackets fixed to-said end rails and transoms, whichbrackets" are provided with slots, brake bea-ms'arranged'in pairs on opposite sides of the truck wheel-s, levers piv otally connected to saidbrake beams, certain of which levers are fulcrumed in certain of theslots of the brackets, the remaining levers being loosely po-sitioned inthe remaining slots in the brackets, and means for simultaneouslyimparting uniform movement to all the levers.

8. The conibi'n'a ti qn with a. six wheeled truck frame having end railsand transoms, of brackets fixed on said end rails and transoms, whichbrackets are provided with slots, brake-beams arranged in pairs onopposite sides of, the truck wheels, levers pivotally connected to saidbrake beams, which levers bear in the slots in the brackets, and meansincluding rods and equalizing levers connected to said first mentionedlevers for simultaneously imparting uniform movement thereto. y

In testimony whereof I hereunto afiix my signature in the presence oftwo witnesses,

